#include #include #include #include #include #include #include #include using namespace std;class PC{ public: enum PC_type { Dell, HP, IBM, Compaq }; PC( PC_type appliance = Dell, int model = 220,int serial = 0 ); bool operator<( const PC& rhs ) const; PC_type appliance() const; int model() const; string name() const; void print() const; int serial() const; private: PC_type appliance_; int model_; int serial_;};inlinePC::PC( PC::PC_type appliance, int model, int serial ) : appliance_( appliance ), model_( model ), serial_( serial ){} inlinebool PC::operator<( const PC& rhs ) const{ return appliance() < rhs.appliance() || ( appliance() == rhs.appliance() && model() < rhs.model() );}inlinePC::PC_type PC::appliance() const{ return appliance_; }inlineint PC::model() const{ return model_; }string PC::name() const{ string what; switch( appliance() ) { case Dell: what = "Dell"; break; case HP: what = "HP"; break; case IBM: what = "IBM"; break; case Compaq: what = "Compaq"; break; default: what = "Unknown appliance"; break; } return what;}inlinevoid PC::print() const{ char oldfill = cout.fill(); cout << name() << " - Model " << model() << ", Serial number " << serial() << endl;}inlineint PC::serial() const{ return serial_; }bool greater_model( const pair p,int min_model );int main( ){ const PC::PC_type kind[] = { PC::IBM,PC::Dell,PC::HP }; vector v; for( int i = 0; i < 3; ++i ) v.push_back( PC( kind[i], i, i ) );}